Gas cap



FIG. 1 left side view of gas cap in a closed position;

FIG. 2 front view of gas cap in a closed position;

FIG. 3 rear view of gas cap in a closed position;

FIG. 4 right side view of gas cap in a closed position;

FIG. 5 top view of gas cap in a closed position;

FIG. 6 bottom view of gas cap in a closed position; and,

FIG. 7 perspective view of gas cap in an open position. 

The ornamental design for a gas cap, as shown and described. 